Hearthstone - The Curse of Naxxramas Now Live!
The first content addition to Hearthstone is now live! It adds thirty new cards, fifteen boss encounters, class challenges, Heroic Mode, and more!

The adventure is divided into 5 different wings and each wing will cost 700 gold or $6.99 USD. If you pay using real money and buy wings in bulk, each wing will only cost $5 USD. If you play Naxxramas during the first month, you will receive the first wing for free.

Originally Posted by Blizzard

Curse of Naxxramas: A Hearthstone Adventure

Curse of Naxxramas offers a new single player campaign to play Hearthstone against challenging NPC adversaries. Curse of Naxxramas can be unlocked with gold or real money and can be accessed by players that have unlocked all 9 heroes.

Defeat 15 fearsome bosses to unlock a total of 30 new Hearthstone cards for your collection, including Legendary cards! Naxxramas cards can easily be searched for within My Collection using the search function.

An all-new interactive Naxxramas-themed game board awaits you within the Adventure! Discover the surprises that lurk inside the slime pools, the quivering masses of spider eggs (spoilers: It’s spiders), and more!

Surmount 9 diabolical Class Challenges that test your skills with each of the unique classes of Hearthstone!

Defeating all of the bosses within a wing unlocks the extremely challenging Heroic Mode of that wing. Defeating all of the bosses of Naxxramas on Heroic mode unlocks a new card back for your collection.

Five unique wings await those brave enough to venture into Naxxramas. The first wing, The Arachnid Quarter, will immediately be available to play for free for a limited time. The remaining four wings are immediately available for players to unlock with real money or gold, and will become accessible over a period of time once unlocked.

That may be the name of the site. But it's expanded to go to all Blizzard products rather than just WoW, including important patches and information relevant to the game universes of Blizzard: WoW, Diablo, Hearthstone, Starcraft and Heroes of the Storm; while also touching other MMOs now and then.
Long since has it been strictly only WoW; however WoW is still the main topic of the site (with other Blizzard products as secondary).

Surmount 9 diabolical Class Challenges that test your skills with each of the unique classes of Hearthstone!

The only diabolical Challenge is to connect to the game on the European servers.
Because is hard to have a good launch when you are such an inexperienced developer like Blizzard.
Being their first online game launch we understand that they lack the knowledge to avoid those issues.

Just wanted to clarify that this maintenance is not for the Curse of Naxxramas Adventure. We will be turning on Curse of Naxxramas for all regions at the same time some time after this maintenance is complete, but please do not expect Naxxramas to be available immediately following this maintenance.

Why carry water for Blizzard? That's not a valid excuse for a botched launch. I'm not even sure if anyone is able to play Naxxramas at the moment. From my memory of the launch of WoTLK, the launch was pretty smooth, bar the reneging on Death Knights on other servers and lie about aerial combat.

You're not getting any brownie points for excusing performance beyond mediocrity on behalf of Blizzard.

Curse founders have very close ties to Blizzard, and once MMO-C became part of Curse, it became essentially a Blizzard fan site, but still focused on WoW. It's not unusual to see front page news for other Blizzard products on here that have no relation to WoW.

Just wanted to clarify that this maintenance is not for the Curse of Naxxramas Adventure. We will be turning on Curse of Naxxramas for all regions at the same time some time after this maintenance is complete, but please do not expect Naxxramas to be available immediately following this maintenance.

People like this are never gonna believe anything so its silly to fight with them especially over something like this. Its summer, go outside. Or if you are anything like me you have other games you have put off to play wow. Go play one of those. The world is not ending, everything will be ok.